3040809
Threaded Plug
Cummins®

Introduction

The Cummins 3040809 Threaded Plug is a component designed for use in commercial trucks. It plays a role in maintaining the integrity and performance of the truck by sealing openings in various systems. Understanding its purpose and significance is essential for maintaining the operational efficiency of commercial vehicles.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components used to seal openings in various systems. They are screwed into place, creating a secure seal that prevents fluid or gas leakage. In automotive and industrial applications, threaded plugs are utilized in engines, hydraulic systems, and other machinery where sealing is necessary to maintain system efficiency and safety ¹.

Purpose of the Cummins 3040809 Threaded Plug

The Cummins 3040809 Threaded Plug is specifically designed to seal openings in the engine and other systems of commercial trucks. It is typically used in areas where access is needed for maintenance or where system integrity must be maintained to prevent leaks. The plug’s role is to ensure that fluids or gases remain contained within the system, contributing to the truck’s operational efficiency and safety ².

Key Features

This Cummins part is constructed from durable materials, ensuring longevity and reliability. It features a specific thread type that allows for a secure fit in the designated openings. The size of the plug is tailored to fit precisely within the system it is designed for, and it may include unique design elements that enhance its sealing capabilities and ease of installation ³.

Benefits

Utilizing the Cummins 3040809 Threaded Plug offers several advantages. It provides an effective seal, reducing the risk of leaks and maintaining system pressure. Its durable construction ensures longevity, and its design facilitates easy installation and removal, enhancing maintenance efficiency. The plug’s reliable performance contributes to the overall reliability and safety of the commercial truck.

Installation Process

Installing the Cummins 3040809 Threaded Plug requires careful attention to ensure a secure fit. The process involves cleaning the area where the plug will be installed, threading the plug into place, and tightening it to the manufacturer’s specifications. Using the appropriate tools and following best practices ensures the plug is installed correctly, providing a reliable seal.

Common Applications

This part finds application in various areas within a commercial truck. It is commonly used in the engine block, transmission, and other systems where sealing is necessary. Its versatility and design make it suitable for a range of applications, highlighting its importance in maintaining the truck’s operational efficiency.

Troubleshooting and Maintenance

Identifying common issues with threaded plugs, such as leaks or damage, is crucial for maintaining the truck’s performance. Regular inspection and maintenance of the plug can help prolong its life and ensure optimal performance. Addressing issues promptly and following maintenance guidelines can prevent more significant problems and ensure the truck operates efficiently.

Manufacturer Information - Cummins

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its high-quality and reliable products. With a broad product range and a reputation for excellence, Cummins provides components that contribute to the efficiency, safety, and reliability of commercial vehicles. The Cummins 3040809 Threaded Plug is a testament to the company’s commitment to quality and performance in the automotive sector.

Compatibility with Cummins Engines

The Threaded Plug 3040809 is designed to fit a variety of Cummins engines, ensuring proper sealing and functionality across different engine series.

6C Series Engines

• 6C8.3
• C8.3 G

B Series Engines

• B5.9
• B5.9 G
• B5.9 GAS PLUS CM556

ISB Series Engines

• ISB CM550
• ISB CM2150
• ISB CM554
• ISB CM850

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

ISL Series Engines

• ISL CM554
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

ISM Series Engines

• ISM CM570
• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN

ISX Series Engines

• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

KTA Series Engines

• KTA19GC CM558

B6.7 Series Engines

• B6.7 CM2670 B164C

C Series Engines

• C GAS PLUS CM556

K19 Series Engines

• K19

Role of 3040809 Threaded Plug in Engine Systems

The 3040809 Threaded Plug is integral to the functionality and maintenance of various engine systems. Its applications span across multiple components, ensuring the efficient operation and protection of the engine.

Afterheater Plumbing

In the afterheater plumbing system, the threaded plug is used to seal off sections of the plumbing that are not in use or require maintenance. This ensures that the system remains pressurized and free from contaminants.

Auxiliary Cooling System

Within the auxiliary cooling system, the threaded plug is employed to cap off coolant passages that are temporarily not required. This helps in directing the coolant flow to the necessary areas, optimizing the cooling process.

Covers (RKR Lev Red No Fill and RKR Lev Tla No Fill)

For the RKR Lev Red No Fill and RKR Lev Tla No Fill covers, the threaded plug is utilized to seal openings that are not in use. This prevents any potential leaks and maintains the integrity of the cover.

Cylinder Block

In the cylinder block, the threaded plug is used to seal off coolant or oil passages that are not active. This ensures that the fluids are directed correctly through the block, enhancing the engine’s performance and longevity.

EBM: Cover

For the EBM (Electronic Brake Module) cover, the threaded plug is essential for sealing any unused ports. This maintains the module’s environmental sealing, protecting it from moisture and debris.

Valve and Engine Control Module

In the valve and engine control module, the threaded plug is used to seal off electrical or fluid connections that are not in use. This ensures that the module operates efficiently without any interference from unused ports.

Front Gear Cover

The front gear cover utilizes the threaded plug to seal off any openings that are not required during operation. This helps in maintaining the gear cover’s structural integrity and preventing any fluid leaks.

Fuel Control and Fuel Valve Control Module

In the fuel control and fuel valve control module, the threaded plug is used to cap off fuel lines or passages that are not active. This ensures that the fuel system remains pressurized and free from contaminants.

Kit: ISM Burn-Only Convers

For the ISM Burn-Only Convers kit, the threaded plug is used to seal any unused components or passages. This ensures that the kit functions correctly without any unnecessary fluid or air leaks.

Lubricating Mounting Cooler, Lubricating Oil Cooler Housing, and Lubricating Oil Filter Cooler

In these lubricating systems, the threaded plug is employed to seal off any unused oil passages. This ensures that the oil flow is directed correctly, optimizing the lubrication process.

Oil Block Connection, Oil Cooler, and Oil Cooler Housing

For the oil block connection, oil cooler, and oil cooler housing, the threaded plug is used to seal off any unused oil lines or passages. This maintains the oil pressure and ensures efficient cooling.

Oil (Top Level Assembly) Pan

In the oil (top level assembly) pan, the threaded plug is used to seal any openings that are not in use. This prevents oil leaks and maintains the pan’s structural integrity.

Rear Gear Train Accessory Drive

For the rear gear train accessory drive, the threaded plug is utilized to seal off any unused gear or accessory connections. This ensures that the drive operates smoothly without any unnecessary wear or leaks.

Rocker Lever (Top Level Assembly) Cover, Rocker Lever Reducing Rear Cover, and Rocker Lever Top Level Assembly Cover

In these rocker lever covers, the threaded plug is used to seal any openings that are not required. This maintains the covers’ environmental sealing and structural integrity.

Rocker Top Level Assembly Cover

For the rocker top level assembly cover, the threaded plug is employed to seal off any unused ports. This ensures that the cover remains free from contaminants and operates efficiently.

Torque Convert Cooler

In the torque convert cooler, the threaded plug is used to seal off any unused coolant passages. This ensures that the coolant flow is directed correctly, optimizing the cooling process for the torque converter.

Conclusion

The Cummins 3040809 Threaded Plug is a vital component in the maintenance and operational efficiency of commercial trucks. Its role in sealing various systems ensures the containment of fluids and gases, contributing to the truck’s overall performance and safety. Understanding its features, benefits, and applications is crucial for effective maintenance and troubleshooting.